76708521618 has 32 divisors (see below), whose sum is σ = 155798349696. Its totient is φ = 25173883008.

The previous prime is 76708521563. The next prime is 76708521649. The reversal of 76708521618 is 81612580767.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86755 + ... + 401177.

It is an arithmetic number, because the mean of its divisors is an integer number (4868698428).

Almost surely, 2^76708521618 is an apocalyptic number.

76708521618 is an abundant number, since it is smaller than the sum of its proper divisors (79089828078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76708521618 is a wasteful number, since it uses less digits than its factorization.

76708521618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315058.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 76708521618 in words is "seventy-six billion, seven hundred eight million, five hundred twenty-one thousand, six hundred eighteen".